Question

. Is x=-1 a root of the quadratic equation x2
-3x-4 =0?​

Answer 1

Step-by-step explanation:

Is x=-1 a root of the quadratic equation x2

-3x-4 =0?

Answer 2

Step-by-step explanation:

A quadratic equation has two roots which may be unequal real numbers or equal real numbers, or numbers which are not real. If a quadratic equation has two real equal roots α, we say the equation has only one real solution. So, x = -1 is a root of the quadratic equation 3x2 + x - 2 = 0.